Chusetts



(No Model.)

J. 0. DE WOLF.

APPARATUS FOR REPAIRING PNEUMATIC TIRES,

NO. 588,546. I Patented Aug 17, 1897.

I I} 710 I 7IL @Emmnf lllllllll m: nonms PETERS co PHOTD-LITHO..WASHINGTON o c A UNITED STATES PATENT OFFICE.-

JOHN'O. DE \VOLF, OF CAMBRIDGE, MASSACHUSETTS, ASSIGNOR TO THE BOSTONWOVEN HOSE AND RUBBER COMPANY, OF BOSTON, MASSA- oHUsErrs.

AP'PAR ATus FOR REPAIRING PNEUMATIC-TIRES.

SPECIFICATION forming part of Letters Patent No. 588,546, dated August1'7, 1897,

Application filed June 10, 1896. Serial N0. 594,898- (NO model.)

To all whom it may concern:

Be it known that 1, JOHN 0. DE WOLF, of Cambridge, county of Middlesex,and State of Massachusetts, have'invented an Improvement in Apparatusfor Repairing Pneumatic Tires, of which the following description, inconnection with the accompanying drawings, is a specification, likeletters on the drawings representing like parts.

This invention has for its object to provide an improved apparatus forrepairing pneumatic tires without necessitating return of the tires tothe original manufactory where they were produced.

The principal aim of my present invention has been to provide anapparatus capable of being set up and used in small and, it may be,isolated places, where the ordinary con veniences for repairingrubber-work are lacking, and whereby the valve-tubes so frequently cutfrom the tires by creeping of the latter on the wheel-rims may bereplaced with facility and thoroughness.

The particular features of which my invention consists will behereinafter particularly described, and pointed out in the claim.

Figure 1,in front elevatiompartially broken away, represents oneembodiment of my invention; and Fig. 2, a right-hand side elevation,partial section, of the same.

In the embodiment of my invention shown in the drawings, mm are twoclamping members, the member 17. being mounted upon or a part of an armor bracket n of a plate N, shown as arranged upon a suitable back orsupport S.

The member m, shown as provided with forwardly extended fingers or armsm, is loosely journaled upon the lower end of the clamping-screw mthreaded in a boss m on and near the upper end of the plate N andprovided at its upper end with a suitable hand-wheel m said member mbeing guided in its vertical movements by a yoke of, embracing thesmooth upper end of the screw m and also by the depending guide-arms m,which travel in contact with a part of the arm n.

The upper or top of the member 72 constitutes a tire-seat, the samebeing provided near its middle with a recess or passage n into which isinserted the tube to be welded or secured to the tire, the flange ofsaid tube resting upon the surface surrounding said recess, said flangebeing pressed tightly against the tire and surrounding the aperturetherein by screwing the clamping member no down upon the tire, as shownin Fig. 1, a clamping plate m being preferably interposed between thefingers m of the member an and the tire T, there shown.

The back S is shownas provided with a suitable bracket 0, on which issupported a conducting-hoodo, which conducts theprodnets of combustionfrom the burner 0 to and to heat theclamping member it without directcontact of the flame with said member, said products of combustionissuing from the top of the hood, circulating first into the chamber 0of said clamping member, thence escaping between the walls of the latterand the upper end of the hood, as indicated by arrows, Fig. 1.

A usual thermostat or thermometer 25, arranged upon or contiguous to oneof the clamping members, as it, indicates to the operator the degree ofheat applied.

The operation of the apparatus is obvious, briefly it being as follows,viz: The flange 0f the valve-tube to be applied to the tire is firstinserted within the tire afterhaving preferably prepared the surface of,the flange and the inside of the tire, so that they may be in propercondition to unite at the desired points. The valve-stem extendingthrough the tube is next placed in position in the recess n in themember n, which has previously been heated to the proper temperature andpreferably coated with soap or some other substance to prevent therubber from adhering. The member n, with the tire and valve-tube inposition, as just described, is then placed between the two clampingmembers, which are brought tightly together, thus clamping the flangedend of the tube against the adjacent portion of the tire, and the heatfrom the burner 0 causes the tire and flanged end of said valve tobecome firmly united together.

IO surface of the other clamping member, combined with a burner-supportand a burner arranged. thereon, and a conducting-l1ooci leading fromsaid burner to said clamping members to heat the latter, substantiallyas described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

JOHN 0. DE WOLF.

\Vitnesscs:

J W. BELLoWs, WM. W. BURGESS, Jr.

